Call it spam or whatever you'd like but
http://www.deepdiscountdvd.com is having a sale on all criterions which makes them the cheapest I've found. Sale ends 4/6 so thought I'd share.
EDIT: The Videodrome Criterion is amazing, everything from the package to the extras is great.
Another edit, for under $60 get the Akira Kurosawa set, WELL worth it.